CN104051383A - Packaged Semiconductor Devices, Methods of Packaging Semiconductor Devices, and PoP Devices - Google Patents

Packaged Semiconductor Devices, Methods of Packaging Semiconductor Devices, and PoP Devices Download PDF

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Publication number
CN104051383A
CN104051383A CN201310329154.0A CN201310329154A CN104051383A CN 104051383 A CN104051383 A CN 104051383A CN 201310329154 A CN201310329154 A CN 201310329154A CN 104051383 A CN104051383 A CN 104051383A
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Prior art keywords
opening
semiconductor device
layer
polymeric layer
insulating material
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Application number
CN201310329154.0A
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CN104051383B (en
Inventor
蔡柏豪
洪瑞斌
林俊成
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Taiwan Semiconductor Manufacturing Co TSMC Ltd
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Taiwan Semiconductor Manufacturing Co TSMC Ltd
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Priority claimed from US13/890,162 external-priority patent/US8877554B2/en
Application filed by Taiwan Semiconductor Manufacturing Co TSMC Ltd filed Critical Taiwan Semiconductor Manufacturing Co TSMC Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/18—High density interconnect [HDI] connectors; Manufacturing methods related thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H01L21/568—Temporary substrate used as encapsulation process aid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/02—Bonding areas; Manufacturing methods related thereto
    • H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
    • H01L2224/04105—Bonding areas formed on an encapsulation of the semiconductor or solid-state body, e.g. bonding areas on chip-scale packages
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    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/10—Bump connectors; Manufacturing methods related thereto
    • H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
    • H01L2224/12105—Bump connectors formed on an encapsulation of the semiconductor or solid-state body, e.g. bumps on chip-scale packages
    • H—ELECTRICITY
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    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/18—High density interconnect [HDI] connectors; Manufacturing methods related thereto
    • H01L2224/19—Manufacturing methods of high density interconnect preforms
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    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
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    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
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    • H01L2224/73267—Layer and HDI connectors
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    • H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
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    • H01L2225/065—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices not having separate containers the devices being of a type provided for in group H01L27/00
    • H01L2225/06503—Stacked arrangements of devices
    • H01L2225/0651—Wire or wire-like electrical connections from device to substrate
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    • H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
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    • H01L2225/06503—Stacked arrangements of devices
    • H01L2225/06555—Geometry of the stack, e.g. form of the devices, geometry to facilitate stacking
    • H01L2225/06568—Geometry of the stack, e.g. form of the devices, geometry to facilitate stacking the devices decreasing in size, e.g. pyramidical stack
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    • H01L2225/1005—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00
    • H01L2225/1011—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00 the containers being in a stacked arrangement
    • H01L2225/1017—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00 the containers being in a stacked arrangement the lowermost container comprising a device support
    • H01L2225/1035—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00 the containers being in a stacked arrangement the lowermost container comprising a device support the device being entirely enclosed by the support, e.g. high-density interconnect [HDI]
    • H—ELECTRICITY
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    • H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
    • H01L2225/03—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00
    • H01L2225/10—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers
    • H01L2225/1005—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00
    • H01L2225/1011—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00 the containers being in a stacked arrangement
    • H01L2225/1041—Special adaptations for top connections of the lowermost container, e.g. redistribution layer, integral interposer
    • H—ELECTRICITY
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    • H01L2225/1011—All the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/648 and H10K99/00 the devices having separate containers the devices being of a type provided for in group H01L27/00 the containers being in a stacked arrangement
    • H01L2225/1047—Details of electrical connections between containers
    • H01L2225/1058—Bump or bump-like electrical connections, e.g. balls, pillars, posts
    • H—ELECTRICITY
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    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/013—Alloys
    • H01L2924/0132—Binary Alloys
    • H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
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    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation
    • H—ELECTRICITY
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    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation
    • H01L2924/1815—Shape
    • H01L2924/1816—Exposing the passive side of the semiconductor or solid-state body
    • H01L2924/18162—Exposing the passive side of the semiconductor or solid-state body of a chip with build-up interconnect

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)

Abstract

Packaged semiconductor devices, methods of packaging semiconductor devices, and package-on-package (PoP) devices are disclosed. In some embodiments, a method of packaging a semiconductor device includes forming through-package vias (TPVs) over a carrier, and coupling a semiconductor device to the carrier. The semiconductor device includes contact pads disposed on a surface thereof and an insulating material disposed over the contact pads. A molding material is formed over the carrier between the TPVs and the semiconductor device. Openings are formed in the insulating material using a laser drilling process over the contact pads, and a redistribution layer (RDL) is formed over the insulating material and the openings in the insulating material. A portion of the RDL is coupled to a top surface of each of the contact pads.

Description

The semiconductor device of encapsulation, method and the PoP device of encapsulated semiconductor device
The cross reference of related application
The application require in the name that on March 15th, 2013 submits to be called " Packaging Devices and Methods of Manufacture Thereof " the 61/794th, the rights and interests of the U.S. Provisional Application of No. 882, its full content is hereby expressly incorporated by reference.
Technical field
Relate generally to technical field of semiconductors of the present invention, more specifically, relates to semiconductor device and method for packing thereof and packaging.
Background technology
Semiconductor device is used for multiple electronic application, for instance, and such as personal computer, mobile phone, digital camera and other electronic equipments.Conventionally by depositing insulating layer or dielectric layer, conductive layer and semiconductor material layer in order above Semiconductor substrate, and with photoetching, various material layers are carried out to patterning to form circuit block thereon and element is manufactured semiconductor device.Conventionally on single semiconductor crystal wafer, produce dozens of or hundreds of integrated circuits.By cutting apart individual dice along line cutting integrated circuit.Then, for instance, individually with multi-chip pattern, on the circuit board or other surfaces that with other encapsulated types, individual dice are encapsulated or individual dice is directly installed in application endways.
Semiconductor industry is constantly improved the integration density of various electronic units (such as transistor, diode, resistor, capacitor etc.) by constantly reducing minimal parts size, thereby allows more device to be integrated in given area.In some applications, these less electronic units also need to utilize the still less less packaging part of area than the packaging part in past.Three dimensional integrated circuits (3DIC) and stacked package (PoP) device are some package design recently, and wherein a plurality of tube cores are vertically stacked in packaging part.
Summary of the invention
In order to solve existing defect in prior art, according to an aspect of the present invention, provide a kind of method of encapsulated semiconductor device, described method comprises: above carrier, form a plurality of package via (TPV); Semiconductor device is connected to described carrier, and described semiconductor device comprises the insulating material that is arranged on its lip-deep a plurality of contact pads and is arranged on described a plurality of contact pads top; Above described carrier and between described a plurality of TPV and described semiconductor device, forming moulding material; Use laser drilling process in described insulating material, to form a plurality of openings, each opening in described a plurality of openings is all arranged on the top of a contact pad in described a plurality of contact pad; And the described a plurality of openings in described insulating material and described insulating material above form redistributing layer (RDL), a part of wherein said RDL is connected to the end face of each contact pad in described a plurality of contact pad.
In the method, described insulating material comprises passivation layer and the polymeric layer that is arranged on described passivation layer top.
In the method, each opening in the described a plurality of openings in described insulating material has essentially identical width in described passivation layer and described polymeric layer.
In the method, in described insulating material, forming described a plurality of opening is included in and in described polymeric layer, forms a plurality of the first openings, and described passivation layer comprises a plurality of the second openings, each second opening in described a plurality of the second openings in described passivation layer is arranged on a contact pad top in described a plurality of contact pad; And in described polymeric layer, forming described a plurality of the first opening is included in and in second opening in described passivation layer, forms first opening in described a plurality of the first openings in described polymeric layer.
In the method, each first opening in described a plurality of the first openings comprises the open top in described polymeric layer, and each second opening in described a plurality of the second opening comprises the bottom opening in described passivation layer.
In the method, each open top that is arranged in a plurality of open tops of described polymeric layer has the first width, each bottom opening that is arranged in a plurality of bottom openings of described passivation layer has the second width, and described the second width is greater than described the first width.
In the method, described insulating material comprises the end face with the first height, described moulding material comprises the end face with the second height, and described the second height is highly basic identical with described first, and the wiring of a part of described RDL has the bottom surface of the end face that is connected to described insulating material.
In the method, the throughhole portions of described RDL is connected to the end face of each contact pad in described a plurality of contact pad, and the bottom surface of each throughhole portions has third high degree, and described third high degree is lower than the second height of described moulding material.
According to a further aspect in the invention, provide a kind of method of encapsulated semiconductor device, described method comprises: above carrier, form a plurality of package via (TPV); A plurality of integrated circuit leads are connected to described carrier, and each in described a plurality of integrated circuit leads comprise a plurality of contact pads, be arranged on the passivation layer of part top of described a plurality of contact pads and the polymeric layer that is arranged on described passivation layer top; Above described carrier, described a plurality of TPV and described a plurality of integrated circuit leads, form moulding material; From the top face of the described polymeric layer of described a plurality of integrated circuit leads, remove described moulding material; In the described polymeric layer of the described a plurality of integrated circuit leads above use laser drilling process each contact pad in described a plurality of contact pads, form opening; Above the end face of described polymeric layer and a plurality of openings in described polymeric layer, form redistributing layer (RDL), a part of described RDL is connected to the end face of each contact pad in described a plurality of contact pad; Remove described carrier; And cut apart described a plurality of integrated circuit lead to form the semiconductor device of a plurality of encapsulation.
In the method, forming described a plurality of TPV comprises: above described carrier, form crystal seed layer; And electric conducting material is plated in to described crystal seed layer top.
In the method, forming described a plurality of TPV further comprises: above described crystal seed layer, form photoresist layer; Described photoresist layer is carried out to patterning to expose the first of described crystal seed layer; Described electric conducting material is plated in to the top of the first of exposing of described crystal seed layer; Remove described photoresist layer to expose the second portion of described crystal seed layer; And the second portion exposing of removing described crystal seed layer.
In the method, from the top face of the described polymeric layer of described a plurality of integrated circuit leads, remove described moulding compound and comprise the technique being selected from the group substantially being formed by chemico-mechanical polishing (CMP) technique, grinding technics, etch process and their combination.
In the method, described method further comprises: before forming described a plurality of TPV, above described carrier, form insulating material; And before cutting apart described a plurality of integrated circuit lead, in described insulating material, forming a plurality of openings, each opening in the described a plurality of openings in described insulating material is arranged on a TPV top in described a plurality of TPV.
The method further comprises: make described a plurality of TPV recessed.
The method further comprises: the surface of each TPV in described a plurality of TPV forms soldering paste.
According to another aspect of the invention, provide a kind of semiconductor device of encapsulation, having comprised: integrated circuit lead, comprise first surface with relative with first surface second; A plurality of contact pads, are arranged on the first surface of described integrated circuit lead; Passivation layer, is arranged on the top of the first surface of described integrated circuit lead, and described passivation layer comprises the opening of each contact pad top in described a plurality of contact pad; Polymeric layer, is arranged on described passivation layer top, and described polymeric layer comprises the laser drill opening of each the contact pad top in described a plurality of contact pad; Moulding material, is configured to around described integrated circuit lead, described passivation layer and described polymeric layer, and the surface of described moulding material and the surface of described polymeric layer are substantially coplanar; A plurality of package via (TPV), are arranged in described moulding material; Redistributing layer (RDL), be arranged on the top of described moulding material, described a plurality of TPV and described polymeric layer, the wiring of described RDL is connected to each contact pad in described a plurality of contact pad through the laser drill opening in described polymeric layer and the opening in described passivation layer; And insulating material, being arranged on the top of second of described integrated circuit lead and described moulding material, described insulating material comprises the opening of each TPV top in described a plurality of TPV.
In the semiconductor device of this encapsulation, the opening in the opening in described passivation layer and described insulating material comprises uneven profile, coarse profile or essentially smooth profile; Or the laser drill opening in described polymeric layer comprises uneven profile or coarse profile.
In the semiconductor device of this encapsulation, described RDL comprises under-bump metallization disposed thereon (UBM) structure, and the semiconductor device of described encapsulation comprises a plurality of parts of the electric conducting material that is connected to described UBM structure.
According to another aspect of the invention, provide a kind of stacked package (PoP) device, having comprised: the semiconductor device of encapsulation according to claim 16, wherein, the semiconductor device of described encapsulation comprises the semiconductor device of the first encapsulation; And the semiconductor device of the second encapsulation, by the opening in described insulating material, via electric conducting material, be connected to the end of each TPV in described a plurality of TPV.
This PoP device further comprises the moulding material of the semiconductor device top that is arranged on described the second encapsulation or is arranged on the semiconductor device of described the first encapsulation and the underfill between the described second semiconductor device encapsulating.
Accompanying drawing explanation
In order to understand more fully the embodiment of the present invention and advantage thereof, the existing following description of making in connection with accompanying drawing as a reference, wherein:
Fig. 1 illustrates according to the sectional view of a part for the semiconductor device of the encapsulation of some embodiments of the present invention;
Fig. 2 illustrates according to the sectional view of the semiconductor device of the encapsulation of some embodiment;
Fig. 3, Fig. 4 and Fig. 5 illustrate according to the sectional view of a part for the semiconductor device of the encapsulation of some embodiments of the present invention;
Fig. 6 to Figure 24 illustrates the sectional view of the technological process of the encapsulated semiconductor device in each stage according to some embodiment;
Figure 25 is the sectional view being encapsulated in together with the semiconductor device of encapsulation described herein and the semiconductor device of another encapsulation in 3DIC configuration; And
Figure 26 is according to the flow chart of the method for the encapsulated semiconductor device of some embodiment.
Embodiment
At length discuss below manufacture and the use of the embodiment of the present invention.Yet, should be appreciated that, the invention provides many applicable inventive concepts that can realize in multiple specific environment.The specific embodiment of discussing is only the illustrative of specific ways of manufacturing and use disclosed theme, and does not limit the scope of different embodiment.
Embodiments of the invention comprise for the novel method of encapsulated semiconductor device and structure.Exemplary embodiment described herein provides the novel low-cost method that forms 3DIC package via (TPV) interconnection structure.Packaging part comprises the redistributing layer (RDL) of the thin insualting material layer with minimum number, thereby cost savings is provided and reduces or elimination warpage.
Fig. 1 illustrates according to the sectional view of a part for the semiconductor device 100 of the encapsulation of some embodiments of the present invention.The semiconductor device 100 of encapsulation comprises according to the semiconductor device 130 of embodiments of the invention encapsulation.First on semiconductor crystal wafer, manufacture a plurality of semiconductor device 130.Semiconductor device 130 comprises and is arranged on its lip-deep contact pad 104, passivation layer 106 and polymeric layer 108, herein, will further be described.Semiconductor device 130 is cut apart, be then encapsulated in individually in moulding compound 114, moulding compound 114 is included in wherein a plurality of package via (TPV) 112 that form, and a plurality of package via provide vertical electrical connection for packaging part.The semiconductor device 100 of encapsulation comprises RDL120, and RDL120 comprises: wiring 122a, is connected to the contact pad 104 of semiconductor device 102 by the opening 131 in passivation layer 106 and polymeric layer 108; With wiring 122b, be connected electrically between wiring 122a and under-bump metallization structure 122c, under-bump metallization structure 122c provides installation region for electric conducting material 126.Wiring 122a is also referred to as the 122a of first of RDL120 in this article, and wiring 122b is also referred to as the second portion of RDL120 in this article.RDL120 is electrically connected to for packaging part provides level.Just the novel encapsulated method of semiconductor device 100 for encapsulation according to an embodiment of the invention will be further described.
Semiconductor device 130 comprises substrate 102.As an example, substrate 102 can comprise bulk semiconductor material or the other materials of silicon, other types.Substrate 102 can comprise that the one or more IC(that form are not shown thereon).As an example, according to the electrical design of IC, IC can comprise active and passive device, conductive layer and dielectric layer.For instance, substrate 102 comprises a part for the semiconductor crystal wafer after semiconductor crystal wafer is being manufactured a plurality of IC and the plurality of IC is cut apart.
Above substrate 102, form a plurality of contact pads 104.A contact pad 104 is only shown in Fig. 1; Yet, on the surface of substrate 102, form a plurality of contact pad 104(referring to Fig. 2).Contact pad 104 and element in substrate 102 or the part (not shown) that connects up is electrically connected to and provides outside being electrically connected to substrate 102.Use deposition and Patternized technique to form contact pad 104 by the conductive layer that is deposited on substrate 102 tops.As an example, contact pad 104 can comprise aluminium (Al), copper (Cu), tin (Sn), nickel (Ni), gold (Au), silver (Ag), other electric conducting materials or their multilayer or combination.As an example, can use physical vapor deposition (PVD), chemical vapor deposition (CVD), electroplating technology or chemical plating process to form contact pad 104.Contact pad 104 can have identical size or be of different sizes.
In the surface of substrate 102 and the top face of contact pad 104 form passivation layer 106, for support structure and physical isolation.As an example, passivation layer 106 comprises silicon nitride (SiN), silicon dioxide (SiO 2), silicon oxynitride (SiON), polyimides (PI), benzocyclobutene (BCB), polybenzoxazoles (PBO), other insulating material or their combination or multilayer.In certain embodiments, passivation layer 106 has approximately 0.1 μ m to the thickness of approximately 6 μ m and substantially conformal with the pattern (topography) of the end face of substrate 102 and contact pad 104.Alternatively, passivation layer 106 can comprise other materials and size.Do not comprise in certain embodiments passivation layer 106.
In certain embodiments, the another part that covers contact pad 104 to expose a part for contact pad 104 by remove a part for passivation layer 106 with the photoresist etch process of mask restriction is manufactured the opening in passivation layer 106.For example, in passivation layer 106, above each contact pad 104, form opening.In other embodiments, in passivation layer 106, above contact pad 104, do not form opening.In certain embodiments, when forming opening in the polymeric layer 108 of subsequent deposition, in passivation layer 106, form opening, in this article it is further described.For instance, before deposited polymer 108, use photoetching process in passivation layer 106, to form in the embodiment of opening, the opening in passivation layer 106 can have essentially smooth sidewall.
On passivation layer 106, form polymeric layer 108, if comprise opening at passivation layer 106, the opening that polymeric layer 108 is followed the profile of passivation layer 106 and filled passivation layer 106 is positioned at a part for contact pad 104 tops.Polymeric layer 108 can be formed by polymer such as epoxy resin, PI, BCB, PBO, but other are relatively soft, normally organically dielectric material also can be for polymeric layer 108.Rotary coating, adhesive tape lamination or other conventional formation methods can be for applying polymeric layer 108.For instance, the thickness of polymeric layer 108 can be between approximately 5 μ m and approximately 30 μ m.Alternatively, polymeric layer 108 can comprise other sizes.Polymeric layer 108 and passivation layer 106 are collectively referred to as insulating material 106/108(in this article for example in some claims).
According to some embodiments of the present invention, before dividing semiconductor device 130, polymeric layer 108 and passivation layer 106 are not carried out to patterning.By (not shown in Figure 1 at carrier; Referring to herein by the carrier in the Figure 10 further describing 150) the upper TPV112 that forms encapsulates the semiconductor device 130 of cutting apart, then shown in Figure 1 by adhesive 110() semiconductor device 130 is attached to carrier 150.For instance, in certain embodiments, adhesive 110 comprises die attach film (DAF).
In certain embodiments, TPV112 comprises: crystal seed layer 116, comprises Cu, Cu alloy, Ti/Cu bilayer or other electric conducting materials; With electric conducting material 118, be plated in or be formed on crystal seed layer 116 tops and comprise Cu, Cu alloy or other electric conducting materials.For instance, the thickness of TPV112 or height (for example, in the vertical direction in Fig. 1) are that approximately 0.05 μ m for example, to approximately 2 μ m, the critical size (CD) of the semiconductor device 100 that its width (in the horizontal direction in Fig. 1) comprises encapsulation.For instance, in certain embodiments, CD can be for approximately 20 μ m be to approximately 300 μ m.Alternatively, TPV112 and CD can comprise other materials and size.
Above TPV112 and semiconductor device 130, form moulding compound 114.As an example, moulding compound 114 comprises the moulding compound being comprised of the insulating material such as epoxy resin, packing material, Stress Release agent (SRA), adhesion promoter (adhesion promoter), other materials or their combination.As an example, use chemico-mechanical polishing (CMP) technique, grinding technics, etch process, additive method or their combination to remove moulding compound 114 from the top face of polymeric layer 108.Also remove in certain embodiments the top of TPV112, thereby reduced their height or thickness.
Then in polymeric layer 108, above each contact pad 104, form opening 131.In certain embodiments, opening 131 is also formed in passivation layer 106.In certain embodiments, use laser drilling process to form opening 131 in polymeric layer 108 or polymeric layer 108 and passivation layer 106.Laser drilling process make in polymeric layer 108 or polymeric layer 108 and passivation layer 106 in for example sidewall of opening 131 form uneven or coarse profile.
Then above the polymeric layer 108 of moulding compound 114, TPV112 and patterning or the polymeric layer 108 of patterning and passivation layer 106, form RDL120.A part of the interior formation of opening 131 RDL120 in polymeric layer 108 or polymeric layer 108 and passivation layer 106.Advantageously, need to be at polymeric layer 108 or polymeric layer 108 and the interior formation conductive plunger of passivation layer 106, thereby saved time and cost, and the passivation layer, polymeric layer or other insulating barriers that further the make smaller amounts semiconductor device 100 for encapsulating.
RDL120 comprises the second portion 122b that the 122a of 122a He Yu first of first connects.The 122a of first is included in a part of top of end face and the wiring of the opening 131 interior formation in passivation layer 108 or polymeric layer 108 and passivation layer 106 of polymeric layer 108.The 122a of first comprises the throughhole portions 123a being arranged in polymeric layer 108 and passivation layer 106.The consistent appearance of the sidewall of the sidewall of throughhole portions 123a and opening 131, therefore, throughhole portions 123a can comprise the uneven or coarse sidewall forming owing to being used to form the laser drilling process of opening 131.
Above the 122a of first, the TPV112 of RDL120 and above the exposed portions serve of moulding compound 114 and polymeric layer 108, forming insulating material 124a.For instance, in certain embodiments, insulating material 124a comprises the described and similar material of polymeric layer 108.For instance, the thickness of insulating material 124a is that approximately 1 μ m is to approximately 20 μ m.Alternatively, insulating material 124a can comprise other materials and size alternatively.
Insulating material 124a is carried out forming opening above the part of patterning with the 122a of first at RDL120, and the second portion 122b that forms RDL120 above the exposed portions serve of the 122a of first of insulating material 124a and RDL120.The second portion 122b of RDL120 is included in the throughhole portions 123b that extends in opening in insulating material 124a and contact with the end face of a part of the 122a of first of RDL120.Above the second portion 122b of RDL120 and the exposed portions serve of insulating material 124a, form insulating material 124b, insulating material 124b comprise description with the similar material of insulating material 124a and size.Insulating material 124b is carried out to patterning to form opening above the part second portion 122b at RDL120, and above the opening of insulating material 124b and at the over top formation UBM of insulating material 124b structure 122c.A part of UBM structure 122c contacts with the end face of a part of the second portion 122b of RDL120.
As an example, in certain embodiments, it is that approximately 2 μ m are to the wiring of approximately 10 μ m that the 122a of first of RDL120 and second portion 122b and UBM structure 122c comprise the thickness being comprised of the electric conducting material such as metal.As an example, the 122a of first of RDL120 and second portion 122b and UBM structure 122c can comprise the metal such as Ti, Al, Ni, nickel vanadium (NiV), Cu or their combination or multilayer.For instance, can form by plating, chemical plating, sputter, process for chemical vapor deposition of materials with via and/or photoetching process the 122a of first and second portion 122b and the UBM structure 122c of RDL120.The 122a of first of RDL120 and second portion 122b and UBM structure 122c can comprise single or multiple lift.For instance, the 122a of first of RDL120 and second portion 122b and UBM structure 122c can comprise the adhesive layer of Ti, TiW, Cr or other materials and/or comprise approximately 0.05 μ m to the crystal seed layer of Cu, Cu alloy, Ti/Cu bilayer or other electric conducting materials of approximately 2 μ m.Alternatively, the 122a of first of RDL120 and second portion 122b and UBM structure 122c can comprise other materials and size, and can use additive method to form.
Above UBM structure 122c, form electric conducting material 126.UBM structure 122c is for by electric conducting material 126, the 122a of first and the second portion 122b by RDL120 is electrically connected to contact pad 104.Electric conducting material 126 diameters or width can be greater than diameter or the width of UBM structure 122c.Electric conducting material 126 comprises eutectic material and can comprise conductive projection or conducting sphere.As an example, in certain embodiments, electric conducting material 126 comprises solder projection or soldered ball.Word used herein " scolder " comprises scolder and the lead-free solder based on plumbous, for example, and for the Pb-Sn composition of the scolder based on plumbous; Comprise InSb; The lead-free solder of tin, silver and copper (" SAC ") component; And there is common fusing point and in electrical applications, form other eutectic materials that conductive solder connects.For lead-free solder, can use the SAC scolder of different component, for instance, such as SAC105(Sn98.5%, Ag1.0%, Cu0.5%), SAC305, SAC405, or comprise such as percentage by weight (wt%) and be about 0.5 Ni or the micro-scolder of Bi.In the situation that not using silver (Ag), also can form the unleaded electric conducting material 126 such as soldered ball by SnCu compound.Alternatively, lead-free solder connector can comprise tin and silver (Sn-Ag) and not use copper.Electric conducting material 126 can be one that forms in the array of electric conducting material 126 of grid (being called as " ball grid array " or " BGA ").Electric conducting material 126 can be arranged to other shapes alternatively.
In certain embodiments, electric conducting material 126 comprises and is shaped as the spherical conducting sphere of part.Alternatively, electric conducting material 126 can comprise other shapes.For instance, electric conducting material 126 can also comprise non-spherical conducting connecting part.In certain embodiments, use the attached electric conducting material 126 of soldered ball drippage technique (ball drop process).In certain embodiments, during electric conducting material 126 mounting processs or after electric conducting material mounting process, can reflux to the eutectic material of electric conducting material 126.Electric conducting material 126(is for example in some claims herein) be called as a plurality of parts of the electric conducting material that is connected to UBM structure 122c.
Advantageously, novel encapsulated method as herein described need to reduce the insulating material of quantity, such as insulating material 124a and 124b.For example, the needs to supplementary insulation material between polymeric layer 108 and insulating material 124a have been avoided, because throughhole portions 123a is formed in polymeric layer 108 rather than is formed in the supplementary insulation material between polymeric layer 108 and insulating material 124a.And in certain embodiments, RDL120 does not need to comprise second portion 122b or insulating material 124b.In certain embodiments, can be in insulating material 124a in formed opening and in the top face of a part of insulating material 124a, form electric conducting material 126, thereby further reduce the quantity of the wiring layer of insulating material and RDL120.
For instance, in certain embodiments, polymeric layer 108 comprises polymer-1a layer, and insulating material 124a comprises polymer-2 layer, and insulating material 124b comprises polymer-3 layer.According to some embodiment, in polymer-1a layer, do not form conductive projection.But use laser drill to form opening 131 in polymer-1a layer, make the 122a of first of RDL120 comprise throughhole portions 123a.In certain embodiments, in the polymer-1a layer above contact pad 104, form opening 131, this contact pad is included in the aluminium (Al pad) that silicon substrate 102 tops form.
In certain embodiments, the 122a of first of RDL120 comprises RDL1 layer, and the second portion 122b of RDL120 comprises RDL2 layer.RDL1 layer be formed on a part of top of polymer-1a layer and in the opening 131 of polymer-1a layer as lining.RDL2 layer is formed on layer top, polymer-2 and electrically contacts with a part for RDL1 layer.Polymer-3 layer are formed on RDL2 layer and layer top, polymer-2.Patterning is carried out in polymer-3 layer, and form UBM structure 122c above a part for polymer-3 layer.
Fig. 2 illustrates according to the sectional view of the semiconductor device 100 of the encapsulation of some embodiment.Diagram shown in Fig. 2 is the diagram shown in the Fig. 1 overturning.For example, electric conducting material 126 on the bottom surface of semiconductor device 100 of encapsulation, be formed on RDL120 above.In Fig. 2, do not illustrate or mark some elements shown in Fig. 1, such as UBM structure 122c.RDL120 is included in the 122a of first and the second portion 122b forming in the polymeric layer 108 shown in Fig. 1 and insulating material 124a and 124b.
Two semiconductor device 130 shown in Figure 2; Yet according to some embodiment, a plurality of semiconductor device 130(are two or more semiconductor device 130 for example) can be encapsulated in single package together.Alternatively, subsequently along line 136 dividing semiconductor devices 130 to form the semiconductor device 100 of independent encapsulation.
Fig. 2 also shows insulating material set on face relative with RDL120 on semiconductor device 130 132.In certain embodiments, in insulating material 132, above each TPV112, form opening 134, with the another side of the semiconductor device 100 that allows and encapsulate, form and be electrically connected to, will further be described in this article.Can use laser drill or photoetching process to form opening 134.In certain embodiments, in the semiconductor device 100 of encapsulation, do not comprise insulating material 132.Fig. 2 also shows its part illustrating in greater detail in Fig. 1.
Fig. 3, Fig. 4 and Fig. 5 illustrate according to the sectional view of a part for the semiconductor device 100 of the encapsulation of some embodiments of the present invention.Fig. 3 illustrates some height and the relative sizes according to the various elements of some embodiment.Insulating material 106/108(for example, polymeric layer 108) comprise have first height h 1end face 125, moulding compound 114 comprise have second height h 2end face.In certain embodiments, the second height h 2with the first height h 1basic identical.A part of RDL120 (for example, the 122a of first) comprises wiring, the bottom surface of this wiring with have first height h 1the end face 125 of insulating material 106/108 connect.For instance, in certain embodiments, the 122a of first comprises RDL1 layer, the bottom level h of RDL1 layer 1substantially equal the overhead height h of the moulding material 114 after grinding 2.
In certain embodiments, as shown in Figure 3, RDL120 comprises for example throughhole portions 123a of the 122a of first of RDL120 of the throughhole portions 123a(that is connected with the end face of contact pad 104).The bottom surface of bottom through-hole 123a comprises third high degree h 3, third high degree h 3be less than the second height h of moulding material 114 2.For instance, in certain embodiments, the height h that the 122a of first comprises throughhole portions 123a 3rDL1 layer, the height h of throughhole portions 123a 3be less than the overhead height h of the moulding material 114 after grinding 2.For instance, in certain embodiments, polymeric layer 108 comprises and has the continuous profile that produces due to passivation and polymer-1a layer of critical size (CD).
Fig. 4 illustrates the sectional view of some embodiment, and wherein, the opening in polymeric layer 108 comprises and has size d 1the first width, the opening in passivation layer 106 comprises and has size d 2the second width.In certain embodiments, there is size d 2the second width be greater than and there is size d 1the first width.As an example, size d 1can be for approximately 5 μ m be to approximately 40 μ m, size d 2can be for approximately 15 μ m be to approximately 40 μ m.Alternatively, size d 1and d 2can comprise other values.
There is size d 1the opening that is arranged in polymeric layer 108 131 be also referred to as in this article the first opening or the open top that is arranged in polymeric layer 108, and there is size d 2the opening that is arranged in passivation layer 106 be also referred to as in this article the second opening or the bottom opening (for example, in some claims) that is arranged in passivation layer 106.During the manufacturing process of semiconductor device 130, can carry out patterning to form a plurality of the second openings in passivation layer 106 above contact pad 104 to passivation layer 106.Each of a plurality of the second openings that is arranged in passivation layer 106 is all arranged on a contact pad top of a plurality of contact pads 104.In certain embodiments, form each in a plurality of the first openings 131 that form polymeric layer 108 in a plurality of the second openings that a plurality of the first openings 131 in polymeric layer 108 are included in passivation layer 106, thereby make size d 2be greater than size d 1.For instance, in certain embodiments, the first opening 131 in polymeric layer 108 can be used laser drill form and can comprise uneven profile or coarse profile, and the second larger opening in passivation layer 106 can be used photoetching form and can comprise essentially smooth profile.For instance, in certain embodiments, polymer-1a layer that polymeric layer 108 comprises the CD opening having on contact pad 104, the CD opening on contact pad 104 is less than the CD opening of the passivation layer 106 on contact pad 104.
Fig. 5 illustrates some embodiment, and wherein each opening in a plurality of openings 131 of insulating material 106/108 is at passivation layer 106 with polymeric layer 108 is interior all has a same widths.For example, in certain embodiments, size d 1with size d 2basic identical.Before deposited polymer layer 108, can carry out patterning to form the second opening above contact pad 104 to passivation layer 106, or alternatively, can passivation layer 106 not carried out to patterning.For instance, can when forming opening 131, remove a part for passivation layer 106, or alternatively, by forming opening 131, can not remove a part for passivation layer 106.For instance, in certain embodiments, the first opening 131 in passivation layer 108 and the second opening in passivation layer 106 can form and can comprise uneven profile or coarse profile by laser drill.For instance, in certain embodiments, polymer-1a layer that polymeric layer 108 comprises the CD opening having on contact pad 104, is wherein positioned at the CD opening that CD opening on contact pad 104 equals the passivation layer 106 on contact pad 104 substantially.
Fig. 6 to Figure 24 illustrates the sectional view of the technological process of the encapsulated semiconductor device in each stage 130 according to some embodiment.Fig. 6 to Fig. 9 illustrates can be for preparing the procedure of processing of the semiconductor device 130 for encapsulating.In Fig. 6, the wafer that comprises a plurality of substrates 102 shown in Fig. 1 is provided, this wafer comprises contact pad 104, passivation layer 106 and the polymeric layer 108 forming thereon.In certain embodiments, after applying polymeric layer 108, the thickness of this polymeric layer 108 is that approximately 1 μ m is to approximately 30 μ m.After applying polymeric layer 108, the opposite face of wafer is carried out to attenuate, and as shown in Figure 7 wafer 102 is attached to the adhesive tape 138 that supported by framework 140 or the carrier device of other types.As shown in Figure 8, by the material along line 142 cutting substrates 102 and formation on substrate 102, carry out dividing semiconductor device 130, thereby as shown in Figure 9, form individual semiconductor device 130.Semiconductor device 130 is attached to carrier 150(referring to Figure 16, will further be described herein) before, the face of the attenuate of substrate 102 is applied to adhesive 110.
Figure 10 to Figure 24 illustrates according to each step of the packaging technology flow process of the semiconductor device 130 of some embodiment.In Figure 10, provide the carrier 150 that comprises carrier wafer.Carrier 150 can comprise glass, semi-conducting material or other materials.Adhesive 152 is connected to carrier 150.Adhesive 152 can comprise glue, adhesive tape or have the other materials of bond property.Above adhesive 152, form insulating material 132.For instance, insulating material 132 can comprise as to as described in similar material and the size of polymeric layer 108.For instance, in certain embodiments, insulating material 132 comprises PBO, PI, solder resist (SR, solder resist) or their combination or multilayer.Alternatively, insulating material 132 can comprise other materials.For instance, in certain embodiments, layer 152 and layer 132 can comprise glue/Polymers resilient coating.
As shown in figure 11, above insulating material 132, form crystal seed layer 116.For instance, can form crystal seed layer 116 by physical vapor deposition (PVD) or additive method.For instance, in certain embodiments, crystal seed layer 116 is as under-bump metallization (UBM) layer.For example, in Figure 25, crystal seed layer 116 is as UBM layer, and the electric conducting material 179 that wherein can comprise a plurality of solder projections or soldered ball is connected to TPV112, will further be described herein.
As shown in figure 12, above crystal seed layer 116, form 154 layers of photoresists.Also as shown in figure 12, use photoetching, according to the pattern for a plurality of TPV, 154 layers of photoresists are carried out to patterning, to expose the first of crystal seed layer 116.As shown in figure 13, use depositing process to form electric conducting material 118 above the first of exposing of crystal seed layer 116.As shown in figure 14, then peel off or remove 154 layers of photoresists, to expose the second portion of crystal seed layer 116.As shown in figure 15, then use etch process or other technique to remove the second portion exposing of crystal seed layer 116, retain the whole lip-deep a plurality of TPV112 that are formed on carrier 150.As an example, TPV can comprise approximately 20 μ m to the width of approximately 300 μ m and in vertical view, can comprise circle, avette, square, rectangle or polygon in vertical view.Alternatively, TPV112 can comprise other shape and size.
As shown in figure 16, a plurality of semiconductor device 130 that comprise the adhesive 110 forming are thereon placed on carrier 150.As an example, artificially is used and is picked up with place machine or use additive method semiconductor device 130 to be attached to the insulating material 132 that is arranged on carrier 150 tops.As shown in figure 17, above the exposed portions serve of TPV112, semiconductor device 130 and insulating material 132, form moulding material 114.As shown in figure 18, the end face of removing moulding compound 114 is to expose the end face of polymeric layer 108 and the end face of TPV112.Also as shown in figure 18 and as previously for as described in Fig. 1, use laser drilling process in polymeric layer 108, to form opening 131.
As shown in Figure 19 and Figure 20 and as previously described herein, then proceed packaging technology to form RDL120 and form electric conducting material 126 above RDL120.In certain embodiments, in packaging technology, at this moment the semiconductor device of encapsulation is carried out to electrical testing.
As shown in figure 21, the semiconductor device of encapsulation is removed and engaged (debond) with carrier 150, then electric conducting material 126 is attached to the adhesive tape 162 being supported by framework 160 or other carriers.As shown in figure 22, use laser drill or photoetching process in insulating material 132, to form opening 134.With laser drilling process, forming in the embodiment of opening 134, the sidewall of the opening 134 in insulating material 132 comprises uneven or coarse profile.By photoetching process, forming in the embodiment of opening 134, the sidewall of the opening 134 in insulating material 132 comprises essentially smooth profile.In certain embodiments, before cutting apart the semiconductor device 100 of a plurality of semiconductor device 130 with formation encapsulation, in insulating material 132, form opening 134.
In certain embodiments, then make the material recess (not shown) of TPV112.For instance, can use etch process to make TPV112 cave in approximately 0.1 μ m to approximately 5 μ m.Alternatively, can make TPV112 other amounts that cave in.In other embodiments, do not make TPV112 depression.
Then, as shown in figure 22, along line 136, cut apart the semiconductor device of encapsulation, and as shown in figure 23, the semiconductor device of encapsulation 100 is removed to form the semiconductor device 100 of individual packages from adhesive tape 162.In certain embodiments, as shown in figure 24, in the surface of each TPV112, form soldering paste 164.In other embodiments, do not apply soldering paste 164.
According to some embodiments of the present invention, as shown in figure 24, the semiconductor device 100 of encapsulation comprises semiconductor device 102, and semiconductor device 102 comprises the RDL120 being arranged on first surface 166a and is arranged on second insulating material 132 on 166b.TPV112 vertically extends through packaging part.The semiconductor device 100 of encapsulation comprises novel integrated output (InFO, fan out) interconnect scheme.
Figure 25 is the sectional view being encapsulated in together with the semiconductor device 100 of encapsulation as herein described and the semiconductor device 170 of another encapsulation in the 3DIC configuration that comprises stacked package (PoP) device 180.For example, in some claims, the semiconductor device 100 of encapsulation is also referred to as the semiconductor device of the first encapsulation in this article, and the semiconductor device 170 of encapsulation is also referred to as the semiconductor device of the second encapsulation in this article.
In order to assemble PoP device 180, the semiconductor device 170 of encapsulation is provided, it comprises one or more semiconductor device 130b and the 130c that is attached to intermediary layer substrate 172.According to some embodiment, the semiconductor device 170 of encapsulation is packaged with the semiconductor device 130a of the semiconductor device 130 comprising shown in Fig. 1.As an example, the substrate that the substrate 172 of the semiconductor device 170 of encapsulation comprises silicon substrate, silicon intermediary layer or glass intermediary layer, printed circuit board (PCB) (PCB), organic laminated substrates or other types.Substrate 172 is included in a plurality of substrate through vias (TSV) 174 that wherein arrange.TSV174 extends to second of substrate 172 from the first surface of substrate 172.TSV174 comprises electric conducting material and the vertical electrical connection from the first surface to the second of substrate 172 is provided.Bond pad 175 is connected to the one or more TSV174 on the first surface that is positioned at substrate 172, and contact pad 173 is connected to the one or more TSV174 that are positioned on second of substrate 172.
Semiconductor device 130b is connected to the substrate 172 of the semiconductor device installation region that is arranged in substrate 172.Can use adhesive, adhesive tape or other devices that semiconductor device 130b is attached to substrate 172.Use bonding wire 176b that Semiconductor substrate 130b is electrically connected to bond pad 175.Can use adhesive, adhesive tape or other devices semiconductor device 130c to be attached to the end face of semiconductor device 130b.Use bonding wire 176c that semiconductor device 130c is electrically connected to bond pad 175.In the accompanying drawings, for simplicity's sake, semiconductor device 130b and 130c are depicted as and are connected to same bond pad 175; Yet in certain embodiments, semiconductor device 130b and 130c are all connected to the different bond pad 175 being positioned on substrate 172.
In certain embodiments, the semiconductor device 170 of encapsulation can comprise a semiconductor device 130b, or the semiconductor device 170 of encapsulation can comprise two or more stacking semiconductor device 130b and 130c, and semiconductor device 130b and 130c can be of different sizes or identical size.As an example, semiconductor device 130b and 130c can comprise one or more semiconductor material layers, one or more conductive material layer, one or more dielectric materials layer or their combination.In certain embodiments, the semiconductor device 170 of the second encapsulation is connected to the end of each TPV112 of the semiconductor device 100 of the first encapsulation by electric conducting material 179, electric conducting material 179 comprise as described in the material of electric conducting material 126.
In certain embodiments, above the semiconductor device 170 of the second encapsulation, for example above the semiconductor device 130b and 130c of vertical stacking, engaging above wiring 176b and 176c and above the exposed portions serve of substrate 172, forming moulding material 178, moulding material 178 comprises and the similar material of described moulding material 114.In other embodiments, in PoP device 180, do not comprise moulding material 178.In certain embodiments, between the semiconductor device 100 of the first encapsulation and the semiconductor device 170 of the second encapsulation, the underfill 182 that comprises insulating material is set.In other embodiments, in PoP device 180, do not comprise underfill 182.
In certain embodiments, semiconductor device 130a comprises logical device, and semiconductor device 130b and 130c comprise memory device, such as dynamic random access memory (DRAM) device.Alternatively, semiconductor device 130a, 130b and 130c can comprise device and the integrated circuit of other types.
Figure 26 is according to flow process Figure 190 of the method for the encapsulated semiconductor device 130 of some embodiment.In step 192, above carrier 150, form TPV112(also referring to Figure 11 to Figure 15); And in step 194, semiconductor device 130 is connected to carrier 150(referring to Figure 16).Semiconductor device 130 comprises that the contact pad 104 arranging in its surface and the insulating material 106/108(arranging above contact pad 104 are referring to Fig. 1).In step 196, above carrier 150 and between TPV112 and semiconductor device 130, forming moulding material 114(referring to Figure 17 and Figure 18).In step 198, above the contact pad 104 in insulating material 106/108, form opening 131(referring to Figure 18).According to some embodiment, use laser drilling process in insulating material 106/108, to form opening 131.In step 199, above the opening 131 above insulating material 106/108 and in insulating material 106/108, form redistributing layer (RDL) 120(referring to Figure 19).A part of RDL120 is connected to the end face (referring to Fig. 1) of each contact pad 104.
Some embodiments of the present invention comprise the method for encapsulated semiconductor device 130.Other embodiment comprise the semiconductor device 100 of the encapsulation that use novel method as herein described encapsulates.Some embodiments of the present invention comprise PoP device 180, and PoP device 180 comprises the semiconductor device 100 of the encapsulation that use encapsulates with reference to the novel method described in Figure 25 herein.
The advantage of some embodiments of the present invention comprises the novel encapsulated method that is provided for semiconductor device.Exemplary embodiment as herein described provides the novel low-cost method that forms 3DIC package via (TPV) interconnection structure.The packaging with the thin polymeric layers that is positioned at redistributing layer (RDL) is provided, thereby is conducive to stop or reduces tube core warpage, tube core inclination and cross and grind.In certain embodiments, in technological process, do not comprise or do not need the passivation of thin polymeric layers (for example, polymeric layer 108).In some applications, the attenuate of polymeric layer provides the ability of controlling tube core warpage.Polymeric layer is more even than thicker polymeric layer conventional in packaging.Novel encapsulated Apparatus and method for is while being less than the thin integrated circuit lead of approximately 40 μ m to be particularly advantageous for example using it for package thickness.
In certain embodiments, by laser drill, form the via metal (for example, the 122a of first of RDL120) being positioned on integrated circuit lead or semiconductor device 130.In certain embodiments, on tube core, do not form conductive projection; But a part of RDL for integrated circuit lead on contact pad 104 electrically contact.In certain embodiments, RDL bottom level approximates or is less than the overhead height of the moulding material after grinding.Thin polymeric layers has continuous profile and the opening by passivation.With use photoetching, thin polymeric layers is carried out to patterning and compare, the thin polymeric layers of laser drill has more coarse profile.In certain embodiments, in polymeric layer, be arranged in above contact pad opening there is the width that is less than or equal to the opening above passivation layer is positioned at contact pad, wherein passivation layer is arranged on thin polymeric layers below.
By reduce or eliminate fracture or the electrical open of RDL in the interior formation of polymeric layer 108, wherein throughhole portions 123a is a part of the part 122a of RDL120, thereby has increased output and reduced costs.In certain embodiments, by laser drill, in polymeric layer 108, form opening 131 and avoided the moistened surface sensitiveness for polymeric material and the moulding material 114 of polymeric layer 108.And novel method for packing, structure and design are easy to be applied in manufacture and packaging technology flow process.Those skilled in the art, when understanding is of the present invention, easily understand other favourable features.
According to some embodiments of the present invention, a kind of method of encapsulated semiconductor device is included in carrier top and forms a plurality of TPV, and semiconductor device is connected to carrier.Semiconductor device comprises a plurality of contact pads that arrange in its surface and is arranged on the insulating material on the plurality of contact pad.The method is included in carrier top and forms moulding material between a plurality of TPV and semiconductor device, and using laser drilling process in insulating material, to form a plurality of openings, each opening in a plurality of openings is all arranged on a contact pad top in a plurality of contact pads.The top that the method is included in insulating material and is arranged in a plurality of openings of insulating material forms RDL, and wherein, a part of RDL is connected with the end face of each contact pad in a plurality of contact pads.
According to other embodiment, a kind of method of encapsulated semiconductor device is included in carrier top and forms a plurality of TPV, and a plurality of integrated circuit leads are connected to carrier.Each integrated circuit lead in a plurality of integrated circuit leads includes a plurality of contact pads, be arranged on the passivation layer of part top of a plurality of contact pads and the polymeric layer that is arranged on passivation layer top.Above carrier, a plurality of TPV, a plurality of integrated circuit lead, form moulding material, and remove moulding material from the top face of the polymeric layer of a plurality of integrated circuit leads.Method comprises above using laser drilling process each contact pad in the polymeric layer of a plurality of integrated circuit leads and in a plurality of contact pads and forms opening, and the end face of polymeric layer and be arranged in polymeric layer a plurality of openings above form RDL.A part of RDL is connected with the end face of each contact pad in a plurality of contact pads.The method comprises to be removed carrier and cuts apart a plurality of integrated circuit leads to form the semiconductor device of a plurality of encapsulation.
According to other embodiment, the semiconductor device of encapsulation comprises integrated circuit lead, this integrated circuit lead comprise first surface with relative with first surface second; And be arranged on a plurality of contact pads on the first surface of integrated circuit lead.Passivation layer is arranged on the top of the first surface of integrated circuit lead, and passivation layer comprises the opening of each the contact pad top that is arranged in a plurality of contact pads.Polymeric layer is arranged on passivation layer top, and polymeric layer comprises the laser drill opening of each the contact pad top that is arranged in a plurality of contact pads.Moulding material is configured to around integrated circuit lead, passivation layer and polymeric layer, and wherein the surface of moulding material and the surface of polymeric layer are substantially coplanar.A plurality of TPV are arranged in moulding material, and RDL is arranged on the top of moulding material, a plurality of TPV and polymeric layer.RDL comprises the wiring that is connected to each contact pad in a plurality of contact pads through the laser drill opening in polymeric layer and the opening in passivation layer.Insulating material is arranged on second and the top of moulding material of integrated circuit lead, and wherein insulating material comprises the opening of each the TPV top that is arranged in a plurality of TPV.
Although described some embodiments of the present invention and advantage thereof in detail, should be appreciated that, can in the situation that do not deviate from the spirit and scope of the present invention that claims limit, carry out various changes, replacement and change.For example, those skilled in the art will understand at an easy rate many parts as herein described, function, technique and material and can change and still retain within the scope of the invention.And the application's scope is not limited in the specific embodiment of technique, machine, manufacture, material component, device, method and the step described in this specification.As those of ordinary skills, according to the present invention, should be readily appreciated that, according to the present invention, can utilize existing or Future Development for carrying out the function substantially the same with corresponding embodiment described herein or obtaining technique, machine, manufacture, material component, device, method or the step of substantially the same result.Therefore, claims expection comprises such technique, machine, manufacture, material component, device, method or step within the scope of it.

Claims (10)

1. a method for encapsulated semiconductor device, described method comprises:
Above carrier, form a plurality of package via (TPV);
Semiconductor device is connected to described carrier, and described semiconductor device comprises the insulating material that is arranged on its lip-deep a plurality of contact pads and is arranged on described a plurality of contact pads top;
Above described carrier and between described a plurality of TPV and described semiconductor device, forming moulding material;
Use laser drilling process in described insulating material, to form a plurality of openings, each opening in described a plurality of openings is all arranged on the top of a contact pad in described a plurality of contact pad; And
Above described a plurality of openings in described insulating material and described insulating material, form redistributing layer (RDL), a part of wherein said RDL is connected to the end face of each contact pad in described a plurality of contact pad.
2. method according to claim 1, wherein, described insulating material comprises passivation layer and is arranged on the polymeric layer of described passivation layer top.
3. method according to claim 2, wherein, each opening in the described a plurality of openings in described insulating material has essentially identical width in described passivation layer and described polymeric layer.
4. method according to claim 2, wherein, in described insulating material, forming described a plurality of opening is included in and in described polymeric layer, forms a plurality of the first openings, and described passivation layer comprises a plurality of the second openings, each second opening in described a plurality of the second openings in described passivation layer is arranged on a contact pad top in described a plurality of contact pad; And in described polymeric layer, forming described a plurality of the first opening is included in and in second opening in described passivation layer, forms first opening in described a plurality of the first openings in described polymeric layer.
5. method according to claim 4, wherein, each first opening in described a plurality of the first opening comprises the open top in described polymeric layer, and each second opening in described a plurality of the second opening comprises the bottom opening in described passivation layer.
6. method according to claim 5, wherein, each open top that is arranged in a plurality of open tops of described polymeric layer has the first width, each bottom opening that is arranged in a plurality of bottom openings of described passivation layer has the second width, and described the second width is greater than described the first width.
7. method according to claim 1, wherein, described insulating material comprises the end face with the first height, described moulding material comprises the end face with the second height, described the second height is highly basic identical with described first, and the wiring of a part of described RDL has the bottom surface of the end face that is connected to described insulating material.
8. a method for encapsulated semiconductor device, described method comprises:
Above carrier, form a plurality of package via (TPV);
A plurality of integrated circuit leads are connected to described carrier, and each in described a plurality of integrated circuit leads comprise a plurality of contact pads, be arranged on the passivation layer of part top of described a plurality of contact pads and the polymeric layer that is arranged on described passivation layer top;
Above described carrier, described a plurality of TPV and described a plurality of integrated circuit leads, form moulding material;
From the top face of the described polymeric layer of described a plurality of integrated circuit leads, remove described moulding material;
In the described polymeric layer of the described a plurality of integrated circuit leads above use laser drilling process each contact pad in described a plurality of contact pads, form opening;
Above the end face of described polymeric layer and a plurality of openings in described polymeric layer, form redistributing layer (RDL), a part of described RDL is connected to the end face of each contact pad in described a plurality of contact pad;
Remove described carrier; And
Cut apart described a plurality of integrated circuit lead to form the semiconductor device of a plurality of encapsulation.
9. a semiconductor device for encapsulation, comprising:
Integrated circuit lead, comprise first surface with relative with first surface second;
A plurality of contact pads, are arranged on the first surface of described integrated circuit lead;
Passivation layer, is arranged on the top of the first surface of described integrated circuit lead, and described passivation layer comprises the opening of each contact pad top in described a plurality of contact pad;
Polymeric layer, is arranged on described passivation layer top, and described polymeric layer comprises the laser drill opening of each the contact pad top in described a plurality of contact pad;
Moulding material, is configured to around described integrated circuit lead, described passivation layer and described polymeric layer, and the surface of described moulding material and the surface of described polymeric layer are substantially coplanar;
A plurality of package via (TPV), are arranged in described moulding material;
Redistributing layer (RDL), be arranged on the top of described moulding material, described a plurality of TPV and described polymeric layer, the wiring of described RDL is connected to each contact pad in described a plurality of contact pad through the laser drill opening in described polymeric layer and the opening in described passivation layer; And
Insulating material, is arranged on the top of second of described integrated circuit lead and described moulding material, and described insulating material comprises the opening of each TPV top in described a plurality of TPV.
10. stacked package (PoP) device, comprising:
The semiconductor device of encapsulation according to claim 16, wherein, the semiconductor device of described encapsulation comprises the semiconductor device of the first encapsulation; And
The semiconductor device of the second encapsulation, is connected to the end of each TPV in described a plurality of TPV via electric conducting material by the opening in described insulating material.
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